Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
trang va » tran van
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - hanh ((trang va) or (hang va)) dung cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh ((trang va) OR (hang va)) dung cong tan toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh ((trang va) or (hang va)) dung cong tan toan cau*.